Santa Fe weather in December
December is one of the least pleasant months in Santa Fe: highs of 32°C (89°F) and about 142 mm (5.6 in) of rain on average. Nights average 17°C (63°F) and cloud cover 49% (NASA POWER, 2001–2025 averages). It is the 2nd wettest month of the year and the 2nd warmest. Compared with November, it is warmer and wetter; January brings highs of 33°C (91°F) and 123 mm (4.8 in) of rain.
Figures are long-term averages for Rosario, the largest city in Santa Fe. See below for other places.
Is December a good time to visit Santa Fe?
least pleasant month Weather score 64/100.
December is one of the least pleasant months for weather in Santa Fe. For better conditions, consider May, Aug–Sep.
Does it rain a lot in Santa Fe in December?
Some rain is normal: about 142 mm (5.6 in) falls in an average December. It is the 2nd wettest month of the year.
How warm is Santa Fe in December?
Days average 32°C (89°F) and nights 17°C (63°F).
Santa Fe weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 33°C (91°F) | 19°C (66°F) | 123 mm | 50% | least pleasant |
| February | 31°C (87°F) | 18°C (64°F) | 139 mm | 58% | least pleasant |
| March | 28°C (83°F) | 16°C (60°F) | 148 mm | 46% | least pleasant |
| April | 24°C (75°F) | 12°C (53°F) | 111 mm | 49% | fair |
| May | 19°C (66°F) | 9°C (47°F) | 52 mm | 54% | best |
| June | 16°C (61°F) | 5°C (41°F) | 22 mm | 52% | fair |
| July | 16°C (60°F) | 4°C (40°F) | 26 mm | 53% | fair |
| August | 18°C (65°F) | 6°C (42°F) | 38 mm | 47% | best |
| September | 22°C (71°F) | 8°C (47°F) | 58 mm | 48% | best |
| October | 25°C (78°F) | 12°C (53°F) | 122 mm | 51% | fair |
| November | 29°C (84°F) | 15°C (58°F) | 109 mm | 46% | fair |
| December | 32°C (89°F) | 17°C (63°F) | 142 mm | 49% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Santa Fe in December
Weather can differ a lot within Santa Fe: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Rosario | 32°C (89°F) | 17°C (63°F) | 142 mm | least pleasant |
| Santa Fe | 32°C (90°F) | 19°C (65°F) | 149 mm | least pleasant |
| Reconquista | 33°C (91°F) | 20°C (68°F) | 173 mm | least pleasant |
| Rafaela | 32°C (90°F) | 18°C (64°F) | 148 mm | least pleasant |
| Gobernador Gálvez | 32°C (89°F) | 17°C (63°F) | 142 mm | least pleasant |
| Venado Tuerto | 31°C (87°F) | 16°C (61°F) | 129 mm | least pleasant |
| Santo Tomé | 32°C (90°F) | 19°C (65°F) | 149 mm | least pleasant |
| Villa Constitución | 32°C (89°F) | 17°C (63°F) | 142 mm | least pleasant |
| Cañada de Gómez | 31°C (88°F) | 17°C (62°F) | 140 mm | least pleasant |
| Esperanza | 32°C (90°F) | 19°C (65°F) | 149 mm | least pleasant |
| Granadero Baigorria | 32°C (89°F) | 17°C (63°F) | 142 mm | least pleasant |
| Casilda | 31°C (88°F) | 17°C (62°F) | 140 mm | least pleasant |